There’s some controversy over whether or not to address your cover letter to a specific person.
Some say that it’s an outdated custom, but the bottom line is that good manners have no expiration date.
The company to which you’re applying may know where your cover letter should go, but put yourself in the employer’s place. S/he is looking for someone to help the company succeed. To that end, they want someone who is thorough and accurate. They want someone who communicates well, who will help their clients or customers feel special and cared for so that they continue to use the service and recommend it to friends. And they want to feel you know what you’re doing. Addressing your cover letter directly to them is an easy and immediate way to show them you care.
If you were hiring someone to help you – to clean your house or to care for your children, would you want a cover letter addressed to “resident” or “to whom it concerns”? Probably not. It gives the impression they don’t care that much. Perhaps they’re sending out letters en masse to everyone. Do you feel that they’ll do the best job caring for your house or your child?
Addressing your correspondence to the right person shows attention to detail, willing to do your research and follow through.